<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>css三角强化巧妙运用案例</title>
    <style>
        .price{
            width: 180px;
            height: 24px;
            border: 1px solid red;
            margin: 0 auto;
            line-height: 24px;

        }
        .a{
            position: relative;
            float: left;
            width: 100px;
            height: 100%;
            background-color: red;
            text-align: center;
            color: wheat;
            font-weight: 700;
            margin-right: 8px;

        }
        .a i{
            position: absolute;
            right: 0;
            top: 0;
            width: 0;
            height: 0;
            /* border-top: 100px solid transparent;
            border-right: 50px solid seagreen;
            border-bottom: 0 solid lightblue;
            border-left: 0 solid lightcoral; */

            /* 只保留右边的边框有颜色 */
            border-color: transparent #fff transparent transparent;
            border-style: solid;
            border-width: 24px 10px 0 0 ;

        }
        .origin{
            font-size: 12px;
            color: gray;
            text-decoration: line-through;
        }

    </style>
</head>
<body>
    <div class="box1">
        <div class="price">
            <span class="a">
                ￥1500.00
                <i></i>
            </span>
            <span class="origin">￥1000.00</span>

        </div>
    </div>
</body>
</html>